Results 61 to 70 of about 4,461,053 (307)

Failure rates in introductory programming [PDF]

open access: yesACM SIGCSE Bulletin, 2007
It is a common conception that CS1 is a very difficult course and that failure rates are high. However, until now there has only been anecdotal evidence for this claim. This article reports on a survey among institutions around the world regarding failure rates in introductory programming courses.
Bennedsen, Jens   +1 more
openaire   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Reliability Analysis of Vital Computer in Railway

open access: yes机车电传动, 2021
Railway transit vital computer is the core equipment to ensure the safe and reliable operation of train. The common architecture of vital computer on rail transit was described, and the key reliability indexes by reliability analysis was calculated.
Zhulin SHEN, Fei DAI
doaj  

Prediction of gas leakage of environmental control systems [PDF]

open access: yes, 1970
Mathematical models of leakage configurations and various flow theories are presented with the substantive experimental test data to provide background material for future design and failure analysis.
Jackson, J. K., Thomas, E. C.
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Development of Scientific and Methodical Providing for the Assessment of Technical Condition of the Automated Systems of Protection of Stationary Objects on the basis of Statistics of Their Operation

open access: yesБезопасность информационных технологий, 2013
In the article methodical provisions on formation of the basic data providing a full and objective assessment of technical condition of existing ASO, being in operation outside a guaranteed life are considered.
Alexander Emelyanovich Grodetsky   +1 more
doaj  

Ще раз про надійність мікропроцесорних пристроїв релейного захисту

open access: yesElektrotehnìka ta Elektroenergetika, 2011
Стаття є продовженням циклу публікацій автора, присвячених надійності мікропроцесорних пристроїв релейного захисту. Наведені у статті статистичні дані, отримані автором, збігаються з даними інших авторів і підтверджують більш високу надійність ...
V. I. Gurevich
doaj   +1 more source

Lifetime-aware cloud data centers: models and performance evaluation [PDF]

open access: yes, 2016
We present a model to evaluate the server lifetime in cloud data centers (DCs). In particular, when the server power level is decreased, the failure rate tends to be reduced as a consequence of the limited number of components powered on.
Chiaraviglio, Luca   +4 more
core   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Evaluation of Atmospheric Neutron Failure Rates and Damage Mechanisms of Ultra-high Voltage Thyristor for DC Transmission

open access: yesYuanzineng kexue jishu
As the core of high-voltage direct-current transmission technology, the DC converter valve and its key power device thyristor face a high risk of failure caused by atmospheric neutron when operating in high-altitude areas. The atmospheric neutron failure
PENG Chao1, ZHOU Yang2, CHEN Zhongyuan2, LEI Zhifeng1, MA Teng1, ZHANG Zhangang1, ZHANG Hong1, HE Yujuan1
doaj   +1 more source

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